Location and Function of Parts and Controls 13the indicator of the MANUAL button below the knobis lit.CONTRAST knob: Adjusts the picture contrast. Turnthe knob to the right to increase the contrast and turnto the left to decrease it. This adjustment is availablewhile the adjustment menu is displayed or theindicator of the MANUAL button below the knob is lit.MANUAL button: Press to perform the adjustmentmanually with the knob. Each time the button ispressed, the button indicator lights up or goes out.Each adjustment is available with the knobs aboveeach indicator while it is lit. Menu operation buttonsDisplays or sets the on-screen menu.Menu selection controlWhen the menu is displayed, turn the control to selecta menu item or setting value, and then press thecontrol to confirm the setting.If the menu is not displayed and the menu selectioncontrol is pressed, the characters that represent thenames of the buttons light up. Also, the names of thefunctions assigned to the function buttons appear onthe screen. Press again to clear it.Alternatively, if the menu is not displayed and themenu selection control is pressed for more than twoseconds, the signal format is displayed on the screen.BACK buttonWhen the menu is displayed, press the button to resetthe value of an item to the previous value (except someitems).MENU buttonPress to display the on-screen menu.Press again to clear the menu. (Power) switch and indicatorWhen the unit is turned off, press the switch to turn iton. When the unit turns on, the unit starts up with theindicator flashing in green. When the unit is inoperation, the indicator lights in green.Press the switch again to turn off the unit. The indicatorgoes out. STATUS indicatorSlowly flashes in yellow when the screen saver starts up,and quickly flashes in yellow when a warning duringstartup occurs.Lights up in blue in the HDR display mode. Slowlyflashes in blue when the screen saver displaying in HDRstarts up, and quickly flashes in blue when a warningduring startup occurs.For details on the HDR (High Dynamic Range) display, seepage 21. OVER RANGE indicatorLights in amber when ABL (Automatic BrightnessLimiter) starts.About error/warning signals of the indicatorWhile the unit is in use, the (Power) switch indicatoror OVER RANGE indicator of the front panel may showerror or warning signals.If an error display appears, refer to Sony qualified servicepersonnel.Error displayWarning display1) When [2.4(HDR)], [S-Log3(HDR)], or [S-Log2(HDR)] isset for [EOTF] in the [Input Setting] menu, regardless ofthe input signal, the screen brightness may decrease due tothe protective function for the OLED panel activates. Toavoid the brightness decrease due to the protectionfunction, it is recommended to keep the temperature of theperipheral environment of the unit around 25 °C.For details on the HDR (High Dynamic Range) display, seepage 21.OVER RANGEindicatorPowerindicatorSymptom– Flashes in red(every second)Power abnormality, circuitboard abnormality, sensorabnormality– Flashes in red(every twoseconds)Fan abnormalityOVER RANGEindicatorPowerindicatorSymptomFlashes inamber (everysecond)– Decreases the brightness toprotect the panel fromoverheating 1)Lights in amber – ABL starts